Comparison of Sirius and IOLMaster 700 in measuring anterior chamber depth and corneal diameter

Objective To analyze the consistency between Sirius and IOLMaster 700 in measuring anterior chamber depth and corneal diameter. Methods From Oct. 2017 to May 2018, the data of 136 eyes of 68 cases of myopia were analyzed retrospectively. The depth of anterior chamber and the diameter of the cornea were measured with Sirius and IOLMaster 700 respectively. The correlation and consistency of the results were compared between the two methods. Results The depth of anterior chamber measured with Sirius and IOLMaster 700 were (3.22±0.33) mm and (3.14±0.33) mm. The difference was statistically significant (P=0.00), and the correlation coefficient r was 0.983. 95.6% results of Bland-Altman analysis were within the 95% consistency limit. The average corneal diameter measured with Sirius was (11.73±0.50) mm, while the average value of IOLMaster was (11.47±0.46) mm. The difference between the two groups was statistically significant (P=0.00) and that between two groups was highly correlated (r=0.952). Bland-Altman analysis accounted for 97.8% of the data within the boundaries. Conclusion There is higher correlation in measuring anterior chamber depth and corneal diameter with Sirius and IOLMaster 700. The consistency between the two measurements was good in clinic. Key words: Myopia; Anterior chamber depth; Corneal diameter; Sirius; IOLMaster 700